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Subject[tip:sched/core] sched: Remove NORMALIZED_SLEEPER
Commit-ID:  6bc6cf2b61336ed0c55a615eb4c0c8ed5daf3f08
Gitweb: http://git.kernel.org/tip/6bc6cf2b61336ed0c55a615eb4c0c8ed5daf3f08
Author: Mike Galbraith <efault@gmx.de>
AuthorDate: Thu, 11 Mar 2010 17:17:17 +0100
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Thu, 11 Mar 2010 18:32:52 +0100

sched: Remove NORMALIZED_SLEEPER

This feature hasn't been enabled in a long time, remove effectively dead code.

Signed-off-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1268301447.6785.38.camel@marge.simson.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
kernel/sched_fair.c | 10 ----------
kernel/sched_features.h | 7 -------
2 files changed, 0 insertions(+), 17 deletions(-)
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 0008cc4..de98e2e 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -742,16 +742,6 @@ place_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int initial)
unsigned long thresh = sysctl_sched_latency;

/*
- * Convert the sleeper threshold into virtual time.
- * SCHED_IDLE is a special sub-class. We care about
- * fairness only relative to other SCHED_IDLE tasks,
- * all of which have the same weight.
- */
- if (sched_feat(NORMALIZED_SLEEPER) && (!entity_is_task(se) ||
- task_of(se)->policy != SCHED_IDLE))
- thresh = calc_delta_fair(thresh, se);
-
- /*
* Halve their sleep time's effect, to allow
* for a gentler effect of sleepers:
*/
diff --git a/kernel/sched_features.h b/kernel/sched_features.h
index c545e04..4042883 100644
--- a/kernel/sched_features.h
+++ b/kernel/sched_features.h
@@ -13,13 +13,6 @@ SCHED_FEAT(FAIR_SLEEPERS, 1)
SCHED_FEAT(GENTLE_FAIR_SLEEPERS, 1)

/*
- * By not normalizing the sleep time, heavy tasks get an effective
- * longer period, and lighter task an effective shorter period they
- * are considered running.
- */
-SCHED_FEAT(NORMALIZED_SLEEPER, 0)
-
-/*
* Place new tasks ahead so that they do not starve already running
* tasks
*/

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